Bump runner from 1.3.0 to 1.4.0

Bumps runner from 1.3.0 to 1.4.0.

---
updated-dependencies:
- dependency-name: androidx.test:runner
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle

@@ -356,7 +356,7 @@ dependencies {
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test:rules:1.4.0'
     // Android JUnit Runner
-    androidTestImplementation 'androidx.test:runner:1.3.0'
+    androidTestImplementation 'androidx.test:runner:1.4.0'
     androidTestUtil 'androidx.test:orchestrator:1.4.0'
 
     // Espresso core